JPS6242642Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a left-right movement mechanism in a tillage device capable of moving left and right, which can smoothly move left and right, and is less prone to failure.

In order to improve the efficiency of tillage work, there are some machines that automatically move the tillage device from side to side.

By the way, as a structure for moving the tillage device from side to side, the main beam of the tillage device is joined with a slidable inner and outer cylinder, and this is connected mechanically or It is hydraulically slidable from side to side.

On the other hand, it is necessary to assemble it into such a structure with high precision and robustness, but if it is assembled with too high precision, it will cause distortion and cause problems such as seizure.

Therefore, this idea provides a rational mechanism based on the harmony between the two.

Hereinafter, specific embodiments of this invention will be described with reference to the drawings.

First, among tillage devices that can automatically move left and right as needed during work, the mechanical structure is roughly as follows.

A PTO power gear box 1 is set in the center, and a left-right moving mechanism gear box 2 is set next to it, and outer cylinders 4, 4 forming a part of the main beam 3 extend from each. 4 is side support 5,
I was not contacted by May 5 and the call ended midway through.

On the other hand, inner cylinders 6, 6, which also constitute a part of the main beam 3 and which are connected to the side supports 5, 5, are slidably supported by sub-beam connecting bodies 7, 7 fixed to the outer cylinders 4, 4. There is. Note that the sub-beam connecting bodies 7, 7 constitute a part of the main beam 3, and also include a sub-beam 8 stretched between the side supports 5, 5.

As a result, the tilling device is configured to be able to move left and right while keeping the width constant, but the tilling shaft 9 drive mechanism 10 is on one side support 5 side, and the left and right movement mechanism 11 is on the other side support 5 side. 4, 4, and are built into the inner cylinders 6, 6 so that their functions will not be impaired even if their relative lengths are changed.

The tilling shaft 9 drive mechanism 10 has a drive shaft 13 spline-coupled to a spline cylinder 12 provided in the inner cylinder 4, and this spline cylinder 12 is fixed to a transmission shaft 16 to which a sprocket 15 in a transmission cylinder 14 is fixed. .

Further, the sprocket 15 is linked to a sprocket 18 fixed to the tilling shaft 9 by a chain 17 or the like.

The left and right moving mechanism 11 has a bevel gear 1 on a drive shaft 13.
In response to this, an idle bevel gear 20 and a bevel gear 21 are loosely fitted onto a threaded shaft 22 provided on an extension of the drive shaft 13 so as to be relatively rotatable. A slide clutch 23 is spline-fitted to the screw shaft 22 at an intermediate position between the bevel gears 19 and 21, and is configured to slide toward and engage with the bevel gears 19 and 21. Further, an end threaded portion 22a of the threaded shaft 22 is screwed to a screw pipe 24 fixed to the side support 5.

As described above, by engaging the slide clutch 23 with either of the bevel gears 19, 21, the tilling device is moved from side to side.

Furthermore, if we explain in detail about the left and right movement mechanism 11,
The screw pipe 24 has a protruding body 25 whose one end protrudes from the side support 5 in the inner cylinder 6.
They are fitted loosely with some play and fixed with roll pins 26 or the like.

On the other hand, the other end side is cylindrical and extends to about the same length as the inner cylinder 6, and this other end side is not supported between the inner cylinders 6 etc. by a bushing, etc., but in the radial direction and slightly in the center. It is also freely movable in the axial direction within a permissible range. Further, a screw hole 24a is formed in the end surface of the screw pipe 24 on the other end side.

Next, the outer cylinder 4 is fixed to the left-right moving mechanism gear box 2, extends toward the side support 5, and is fixed to the sub-beam connecting body 7 near the end thereof.

Furthermore, the screw shaft 22 extends into the outer cylinder 4 and the sub-beam connecting body 7 so as to be rotatable in the left and right directions as described above, and its length extends approximately to the seventh position of the sub-beam connecting body. Therefore, the threaded portion 22a of the screw shaft 22 is screwed into the threaded hole 24a of the screw pipe 24 to connect the two.

With this, the screw shaft 22 is connected to the screw pipe 2.
4 by a screw connection, and the screw pipe 24 and side support 5 are also integrated. The inner cylinder 6, which is fixed to the side support 5, is also slidably inserted into the outer cylinder 4 and the sub-beam connecting body 7.

On the other hand, since a similar configuration is adopted on the drive mechanism 10 side, here, the main beam 3
becomes one rigid beam by the outer cylinders 4, 4, sub-beam connectors 7, 7, and inner cylinders 6, 6,
Each of them incorporates the drive mechanism 10 and the left/right movement mechanism 11 as described above.

Next, when you want to move the tillage device in the left and right direction, you can move the slide clutch 23 to either the bevel gear 19 or the bevel gear 2 using the operating lever 27.
1. Then, the driving force of the drive shaft 13 is also transmitted to the screw shaft 22, and the screw shaft 22 is rotated to move the screw pipe 24 and therefore the inner cylinder 6 to the left or right. The side supports 5, 5 connected to the inner cylinder 6 are connected by the sub-beam 8 and the tilling shaft 9, so if one side support 5 moves, the other side support 5 also moves accordingly, and the tilling device is moved accordingly. It will shift left and right.

Since this movement is during work, force is applied to each part, which naturally causes distortion. Therefore, if the screw pipe 24 is damaged by a bushing or the like, this may cause seizing or prevent smooth operation, but as mentioned above, the other end of the screw pipe 24 is simply Since it is only screwed onto the screw shaft 22, it can easily follow its deformation. Furthermore, since one end of the screw pipe 14 is fixed to the protruding body 25 with a considerable amount of play, even if manufacturing errors or external pushing forces are applied, it is easily accommodated, and the screw connection is made to fit easily.

These also mean that assembly is easy, which helps reduce the number of parts.

In addition, since the screw pipe 24 is integrated by the side support 5 and the roll pin 26, even if an abnormal load is applied for some reason, the roll pin 26 will break and it will be safe. It acts as a pin and prevents each member from being catastrophically destroyed.

Furthermore, since the flow of the lubricating oil is not obstructed by the presence of bushes and the like, excellent effects such as smooth flow of the lubricating oil through the oil passage holes 28, 29, etc. to the threaded joint are achieved.

[Brief explanation of the drawing]

The drawings show a specific example of this invention; FIG. 1 is a plan view, FIG. 2 is a sectional view, and FIG. 3 is an enlarged sectional view of the main part. Code, 4...Outer cylinder, 6...Inner cylinder, 22...Screw shaft, 24...Screw pipe, 5...Side support, 9...Tilling shaft, 25...Protrusion body.

Claims (1)

[Scope of utility model registration request] An inner cylinder 6 is slidably inserted into the outer cylinder 4, a side support 5 is vertically disposed in the inner cylinder 6, and a screw shaft 22 is connected to the outer cylinder 4 and a screw pipe is connected to the inner cylinder 6. In the horizontal movement mechanism of a tillage device that moves the tillage shaft 9 horizontally by screwing with the screw pipe 24, the screw pipe 2
4 is screwed onto a screw shaft 22, and the other end is fixed to a protrusion 25 fixed to a side support 5 with considerable play.